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iSource+TM RS-232 Capabilities AppNote
Revised 19 April 2004
Setting & Using the RS-232 Capabilities of Different Rubidium Models
CONTENTS
1. RS-232 CONNECTION TYPES..................................................................................................................................... 2
1.1 Pin Layout of Different Rubidium Models .............................................................................................. 2
1.2 Mapping of the PC RS-232 Pin Layout ................................................................................................. 3
2. SERIAL INTERFACE OPERATION............................................................................................................................... 3
2.1 Introduction............................................................................................................................................ 3
2.2 RS-232 Limitations for Specific Rubidium Models ................................................................................ 3
2.3 General Instructions for Serial Interface Communications.................................................................... 4
2.4 Understanding the Serial Interface Connection Scheme ...................................................................... 5
2.5 Monitoring the Rubidium Internal Parameters....................................................................................... 5
2.6 Adjusting/Calibrating the Frequency Center through the Serial Interface............................................. 5
2.7 Reading back the Frequency Center Values ........................................................................................ 9
2.8 Rubidium Identification .......................................................................................................................... 9
3. RS-232 ADAPTER CIRCUIT ......................................................................................................................................... 9
4. RUBIDIUM ASCII-CODE CONVERSION TABLE FOR COMMUNICATIONS ............................................................. 10
5. MICROSOFT WINDOWS 95/98 HYPERTERMINAL SETUP CONFIGURATION ....................................................... 11